Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
OPERATING ACTIVITIES:
Net loss	$ (43,429)	$ (8,794)	$ (10,500)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	35,504	25,644	23,806
Amortization of debt discount and issuance costs	1,792	11,428	10,829
Stock-based compensation expense	84,787	44,549	21,355
Deferred income taxes	(4,164)	(1,502)	(10,350)
Gain on mark-to-market adjustment of contingent consideration	(7,153)	0	0
Expense on repurchase of convertible senior notes	16,621	0	0
Other, net	387	1,271	1,377
Changes in assets and liabilities:
Accounts receivable	(34,175)	(15,645)	(11,032)
Prepaid expenses and other current assets	1,014	(9,026)	(2,131)
Other long-term assets	2,852	(6,682)	(4,527)
Accounts payable	3,771	(3,857)	(1,839)
Accrued compensation and benefits	280	7,761	1,985
Other accrued expenses and current liabilities	(59,463)	6,365	5,629
Deferred revenue	40,946	10,111	8,280
Net cash provided by operating activities	39,570	61,623	32,882
INVESTING ACTIVITIES:
Payments for acquisition of businesses, net of cash acquired	(134,541)	(53,983)	(41,028)
Capital expenditures	(9,648)	(7,849)	(6,093)
Other investing activities, net	(10,322)	(650)	(1,971)
Net cash used in investing activities	(154,511)	(62,482)	(49,092)
FINANCING ACTIVITIES:
Proceeds from issuance of convertible senior notes, net of underwriters' discounts and commissions	224,265	0	0
Repurchase of convertible senior notes	(192,422)	0	0
Repurchase and retirement of common stock	(19,659)	0	0
Proceeds from employee stock purchase plan contributions	8,976	4,222	0
Proceeds from the exercise of common stock options	3,577	2,262	1,710
Payments for issuance costs of convertible senior notes	(1,523)	0	0
Proceeds from private placement of common stock	0	200,000	0
Payments on revolving commitment	0	(30,000)	0
Borrowings under revolving commitment	0	0	30,000
Other financing activities	(233)	(537)	(460)
Net cash provided by financing activities	22,981	175,947	31,250
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(5,094)	(2,623)	3,010
Net (decrease) increase in cash, cash equivalents and restricted cash	(97,054)	172,465	18,050
Cash, cash equivalents and restricted cash at beginning of year	414,012	241,547	223,497
Cash, cash equivalents and restricted cash at end of period	316,958	414,012	241,547
Supplemental disclosures of cash flow:
Interest paid	2,425	633	731
Income taxes paid	8,941	9,168	12,666
Supplemental disclosure of non-cash investing and financing activities:
Promissory notes issued and deferred payment obligations for acquisitions	1,350	86,936	1,266
Property and equipment in accounts payable and other current liabilities	659	1,056	1,671
Issuance of common stock in connection with acquisitions	224	3,690	3,504
Finance leases	$ 0	$ 9	$ 118